Setting The Hello Interval; Enabling Session Flow Control - HPE FlexNetwork MSR series Configuration Manual

To ensure tunnel security, enable tunnel authentication.
For the tunnel authentication key change to take effect, change the tunnel authentication key before
tunnel negotiation is performed.
To configure L2TP tunnel authentication:
Step
1. Enter system view.
2. Enter L2TP group view.
3. Enable
authentication.
4. Set
authentication key.

Setting the Hello interval

To check the connectivity of a tunnel, the LAC and LNS periodically send each other Hello packets.
At receipt of a Hello packet, the LAC or LNS returns a response packet. If the LAC or LNS receives
no response packets from the peer within the Hello interval, it retransmits the Hello packet. If it
receives no response packets from the peer after transmitting the Hello packet five times, it
considers the L2TP tunnel to be down.
To set the Hello interval:
Step
1. Enter system view.
2. Enter L2TP group view.
3. Set the Hello interval.

Enabling session flow control

This feature adds sequence numbers to transmitted packets and uses them to reorder packets
arriving out of order and to detect lost packets.
This feature takes effect on both sent and received L2TP data messages. The L2TP sessions
support this feature if either the LAC or LNS is enabled with this feature.
To enable session flow control:
Step
1. Enter system view.
2. Enter L2TP group view.
3. Enable the session flow
control feature.
Command
system-view
l2tp-group group-number [ mode
{ lac | lns } ]
L2TP tunnel
tunnel authentication
the tunnel
tunnel password { cipher | simple }
string
Command
system-view
l2tp-group group-number [ mode
{ lac | lns } ]
tunnel timer hello hello-interval
Command
system-view
l2tp-group group-number [ mode
{ lac | lns } ]
tunnel flow-control
83
Remarks
N/A
N/A
By default, L2TP
authentication is enabled.
By default, no key is set.
Remarks
N/A
N/A
The default setting is 60 seconds.
Remarks
N/A
N/A
By default, this feature
disabled.
tunnel
is